Nerf Vulcan ammo counter.

System is controlled by a PIC 16F88 chip. There is a ICSP header on the board so you can reprogram it in circuit.

My maverick is modified with a 12V SLA battery. The board will take from 5-20volts.

$Description: C:\Users\mwood\Desktop\Pic counter\Counter on.JPG$ I wanted 2 digit 7 segment display. Four digit display was kind of overkill since I only need 2 digits.

10 bar graph.

There are two feedback lights for the two relays. One green and one blue.

In addition there are 4 RED led lights. I use them for showing the count for now. 10,20,30,40

Other uses of the Red LEDs: Maybe use them to indicate +100,200,300,400 for larger capacity things like paintball or airsoft. Could also use them for multiple belts/cartridges.

Integrated the power to the pack in the maverick

Switching the power on the pack turns on the power of the board. As a consequence, opening the lid of the belt also severs the power to the belt.

Trigger is based on a physical rocker switch.

Buttons on the board are:

increment counter
decrement counter
Set count default to EEPROM. I added visual feedback
light/laser switch
reset counter

$Description: C:\Users\mwood\Desktop\Pic counter\Counter on.JPG$ Relays are used for laser and light. Blue is connected to laser. Green is for the light.

External trigger for the lamp/laser. I placed a button near the trigger so I can easily activate it. Triggering the light/laser button goes through the following sequence:

all off (starts off here)
light on
laser on
light and laser on
all off
laser on

For the relays, I currently have the 5v supply from the linear regulator connected to the laser to power it directly.

I have a new version on order that fixes some of the small changes that I have made with wire jumpers.

New version I have started has a separate board for display and driver board. Two versions of the driver board, 16f88 and 16f883 with a mix of mosfets and relay. Battery sensor input. Maybe a new board for display with 3 digits. additional button soyou can have both light and laser.

The long video: http://www.youtube.com/watch?v=8IBJJTnPecc

Shooting entire belt: http://www.youtube.com/watch?v=cnBeqP58RDY

Display at zero Ammo: http://www.youtube.com/watch?v=wM0KUT-lbX4

Keywords: Shoot all ammo counter airsoft laser Nerf Stampede Vulcan pic16 micro 16f88 relay controller modified custom board programmable EEprom